Related formsside·split·ting·ly, adverb
Examples from the Web for sidesplitting
Is the Republican nominee armed with a sidesplitting sense of humor?
But rival Sharron Angle also ran an epically terrible campaign, one that comes with a sidesplitting blooper reel for the DVD.
What she said was sidesplitting enough, but her gestures, her expression and her voice were beyond description.The Camp Fire Girls' Larks and Pranks|Hildegard G. Frey